[bot-api] Bot throws an error when channel is innactive for more than 30 mins.

[ghost]

Here's the error:

Fatal error: Uncaught Error: Call to a member function get() on null in init.php:33
Stack trace:
#0 [internal function]: {closure}(Object(Discord\Parts\Channel\Message), Object(Discord\Discord), Object(Discord\Discord))
#1 /{DISCORD_DIR}/vendor/evenement/evenement/src/Evenement/EventEmitterTrait.php(64): call_user_func_array(Object(Closure), Array)
#2 /{DISCORD_DIR}/src/Discord/WebSockets/WebSocket.php(633): Evenement\EventEmitter->emit('MESSAGE_CREATE', Array)
#3 /{DISCORD_DIR}/src/Discord/WebSockets/WebSocket.php(249): Discord\WebSockets\WebSocket->handleHandler(Array, Object(stdClass))
#4 [internal function]: Discord\WebSockets\WebSocket->Discord\WebSockets\{closure}(Object(Ratchet\RFC6455\Messaging\Message), Object(Ratchet\Client\WebSocket))
#5 /{DISCORD_DIR}/vendor/evenement/evenement/src/Evenement/EventEmitterTrait.php(64): call_user_func_array(Object(Closure), Array)

Line 33 of my code is:

$guild = $discord->guilds->get('id', $message->full_channel->guild->id);
$member = $guild->members->get('id', $message->author->id);

$array['userdata'] = $member->user;

if($member->roles->get('name', 'BOT CONTROLING')) { /* This is line 33 */
    $array['can_control_bot'] = TRUE;
} else {
    $array['can_control_bot'] = FALSE;
}

$message->channel->sendMessage("```".json_encode($array)."```");